| EXTERNAL KEY QUANTITY | 18 |
| EXTERNAL PREBENT KEY WIDTH | 0.328 INCHES MAXIMUM |
| HOLE DIAMETER | 2.973 INCHES MINIMUM AND 3.003 INCHES MAXIMUM |
| INTERNAL PREBENT KEY LENGTH | 0.187 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| INTERNAL PREBENT KEY WIDTH | 0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 3.562 INCHES MINIMUM AND 3.592 INCHES MAXIMUM |
| OVERALL DISTANCE INCLUDING KEYS | 4.109 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.072 INCHES NOMINAL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT | CADMIUM AND DICHROMATE OVERALL |